The electric strength of hexane vapor and liquid in the critical region

Autor:	P. K. Watson, A. H. Sharbaugh
Rok vydání:	1977
Předmět:	Chemistry Vapor pressure Saturation vapor density Analytical chemistry Extrapolation General Physics and Astronomy Cathode law.invention Hexane Field electron emission chemistry.chemical_compound Boiling point law Critical point (thermodynamics)
Zdroj:	Journal of Applied Physics. 48:943-950
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.323713
Popis:	The breakdown strength of hexane vapor has been measured above its critical temperature over a wide range of densities (0.001–0.45 g/cm3). Voltage pulses of 10‐μsec duration were used for the measurement. Above a density of 0.01 g/cm3 the strength of the vapor is appreciably less than the extrapolated low‐pressure results. This departure from Paschen’s Law is believed to be due to field emission from the cathode. Extrapolation of the high‐density vapor leads to a breakdown strength in excess of that measured in liquid. Measurements have also been made of breakdown strength under a range of conditions of temperature and pressure near the critical point in both liquid and vapor phases. The breakdown strengths of the liquid are somewhat lower than those of the vapor, but the values converge as one approaches the critical point, and it is suggested that the breakdown mechanisms in liquid and vapor are similar in the vicinity of the critical region.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::821e15c1497a38d9526c6659a7d92f80 https://doi.org/10.1063/1.323713 Zobrazit plný text záznamu